Correct answer: B. When there is no oncoming traffic.
Drivers should use the main beam headlights, to improve visibility, when driving at night in unlit rural areas : this will enable them to see as far ahead as possible. Making sure, however, that these lights are dimmed where necessary to avoid dazzling or inconveniencing other road users.
This is an official-style question from the Safe and Responsible Driving topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.
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